A chemistry professor at Humboldt State University in California offers students of medieval science a chance to build replicas of scientific instruments. Richard A. Paselk, a professor of chemistry in California has been studying medieval science since he was a child. Since then, he has begun to build his own replicas and given lectures on the origins and use of the devices. On his website, he offers materials which allow students to build and use these medieval, renaissance and navigational instruments.

In 2000, Professor Paselk dedicated the Robert A. Paselk Scientific Instrument Museum. His navigational instrument replicas were displayed in 2001 as part of the Alexander von Humboldt Conference.